Butterfly-inspired crystals could enable durable, potentially safer glitter‎

The next time you need to freshen up the paint on your house or apply a bit of cosmetic glitter before heading out for the night, you might want to give a quick nod to the butterflies fluttering in a nearby garden. Taking inspiration from structures on those wings that create their vibrant colors, researchers are now devising more durable and adjustable colors that are also safer for human health and the environment.